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13 July, 19:51

A scientist needs 120Ml of a 20% acid solution for an experiment. The lab has available a 10% solution and a 25% solution. How many millimeters of the 10% solution and how many millimeters of the 25% solution should the scientist mix to make the 20% solution?

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  1. 13 July, 22:14
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    40ml of 10% and 80ml of 25%

    Step-by-step explanation:

    10x+25 (120-x) = 2400

    -15x+3000=2400

    15x=600

    x=40
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